module TestHelpers where

import qualified Data.Aeson as AE
import qualified Data.Aeson.Encode.Pretty as AE
import qualified Data.ByteString.Lazy.Char8 as BS
import           Data.Text (Text, pack)

import           GHC.Generics (Generic)

import           Network.JSONApi

prettyEncode :: AE.ToJSON a => a -> BS.ByteString
prettyEncode = AE.encodePretty

class HasIdentifiers a where
  uniqueId :: a -> Int
  typeDescriptor :: a -> Text

data TestResource = TestResource
  { myId :: Int
  , myName :: Text
  , myAge :: Int
  , myFavoriteFood :: Text
  } deriving (Show, Generic)

instance AE.ToJSON TestResource
instance AE.FromJSON TestResource
instance ResourcefulEntity TestResource where
  resourceIdentifier = pack . show . myId
  resourceType _ = "testResource"
  resourceLinks _ = Nothing
  resourceMetaData _ = Nothing
  resourceRelationships _ = Nothing
instance HasIdentifiers TestResource where
  uniqueId = myId
  typeDescriptor _ = "TestResource"

data OtherTestResource = OtherTestResource
  { myFavoriteNumber :: Int
  , myJob :: Text
  , myPay :: Int
  , myEmployer :: Text
  } deriving (Show, Generic)

instance AE.ToJSON OtherTestResource
instance AE.FromJSON OtherTestResource
instance ResourcefulEntity OtherTestResource where
  resourceIdentifier = pack . show . myFavoriteNumber
  resourceType _ = "otherTestResource"
  resourceLinks _ = Nothing
  resourceMetaData _ = Nothing
  resourceRelationships _ = Nothing
instance HasIdentifiers OtherTestResource where
  uniqueId = myFavoriteNumber
  typeDescriptor _ = "OtherTestResource"

data TestMetaObject = TestMetaObject
  { totalPages :: Int
  , isSuperFun :: Bool
  } deriving (Show, Generic)

instance AE.ToJSON TestMetaObject
instance AE.FromJSON TestMetaObject
instance MetaObject TestMetaObject where
  typeName _ = "importantData"

toResource' :: (HasIdentifiers a) => a
            -> Maybe Links
            -> Maybe Meta
            -> Resource a
toResource' obj links meta =
  Resource
    (Identifier (pack . show . uniqueId $ obj) (typeDescriptor obj) meta)
    obj
    links
    Nothing

linksObj :: Links
linksObj = mkLinks [ ("self", "/things/1")
                   , ("related", "http://some.domain.com/other/things/1")
                   ]

testObject :: TestResource
testObject = TestResource 1 "Fred Armisen" 51 "Pizza"

testObject2 :: TestResource
testObject2 = TestResource 2 "Carrie Brownstein" 35 "Lunch"

otherTestObject :: OtherTestResource
otherTestObject = OtherTestResource 999 "Atom Smasher" 100 "Atom Smashers, Inc"

testMetaObj :: Meta
testMetaObj = mkMeta (TestMetaObject 3 True)

emptyMeta :: Maybe Meta
emptyMeta = Nothing

emptyLinks :: Maybe Links
emptyLinks = Nothing